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-rays of fuel debrisMatsumura, Taichi; Okumura, Keisuke; Fujita, Manabu*; Sakamoto, Masahiro; Terashima, Kenichi; Riyana, E. S.
Radiation Physics and Chemistry, 199, p.110298_1 - 110298_8, 2022/10
Times Cited Count：1 Percentile：31.61(Chemistry, Physical)Matsumura, Taichi; Nagaishi, Ryuji; Katakura, Junichi*; Suzuki, Masahide*
Radiation Physics and Chemistry, 166, p.108493_1 - 108493_9, 2020/01
Times Cited Count：2 Percentile：12.16(Chemistry, Physical)In this work, when radiation sources of 
Cs, 
Sr and Y were assumed to be put in the front of a plain SUS304 plate as a typical material submerged in water, energy spectra of secondary photons and electrons at the front and back sides of plate were simulated with changing the thickness of plate, and spacing between the source and plate by using a Monte Carlo calculation code of PHITS. In the case of Cs gamma-ray (monochromatic 662 keV), the energy spectra at the front side was smaller than those at the back side due to the existence of plate. Then the dependence of spectra on the plate thickness was observed more clearly at the back side than at the front side. It was clearly shown how the energy spectra of photons and electrons varied with the incident radiation type, the spacing, and the thickness.
-mode plasmas in JT-60U tokamakUrano, Hajime; Takizuka, Tomonori; Takenaga, Hidenobu; Oyama, Naoyuki; Miura, Yukitoshi; Kamada, Yutaka
Nuclear Fusion, 46(8), p.781 - 787, 2006/08
Times Cited Count：22 Percentile：58.85(Physics, Fluids & Plasmas)The degradation of energy confinement with increased toroidal beta 
was shown by the non-dimensional analysis in JT-60U. The dependence of the energy confinement on was examined by both the JT-60U ELMy 
-mode confinement database and the dedicated experiment on a single scan while 
and 
were kept fixed as well as the other magnetic geometrical parameters. In both cases, the degradation of energy confinement with increasing was observed, satisfying the relation of 
. This dependence is a little weaker than that predicted by the IPB98(y,2) scaling. The fusion power production rate was estimated to increase in proportion to 
.
and collisionality approaching ITER conditionsCordey, J. G.*; Thomsen, K.*; Chudnovskiy, A.*; Kardaun, O. J. W. F.*; Takizuka, Tomonori; Snipes, J. A.*; Greenwald, M.*; Sugiyama, L.*; Ryter, F.*; Kus, A.*; et al.
Nuclear Fusion, 45(9), p.1078 - 1084, 2005/09
Times Cited Count：51 Percentile：82.4(Physics, Fluids & Plasmas)The condition of the latest version of the ELMy H-mode database has been re-examined. It is shown that there is bias in the ordinary least squares regression for some of the variables. To address these shortcomings three different techniques are employed: (a)principal component regression, (b)an error in variables technique and (c)the selection of a better conditioned dataset with fewer variables. Scalings in terms of the dimensionless physics valiables, as well as the standard set of engineering variables, are derived. The new scalings give a very similar performance for existing scalings for ITER at the standard beta, but a much improvement performance at higher beta.
Nakajima, Ken
Proceedings of International Conference on the New Frontiers of Nuclear Technology; Reactor Physics, Safety and High-Performance Computing (PHYSOR 2002) (CD-ROM), 8 Pages, 2002/10
The nuclear characteristics of TRACY, such as the criticality, the 
/
ratio, the peak power, the energy of pulse, and the total energy, have been evaluated using the experimental data. TRACY is a supercritical reactor fueled with low-enriched uranyl nitrate aqueous solution to simulate criticality accidents in a fuel processing facility, such as a spent-fuel reprocessing plant. In this evaluation, the availability of criticality calculation and the models to evaluate the power and energy have been studied.
Maekawa, Fujio; Wada, Masayuki*; Ikeda, Yujiro
Nuclear Instruments and Methods in Physics Research A, 450(2-3), p.467 - 478, 2000/08
Times Cited Count：6 Percentile：44.18(Instruments & Instrumentation)no abstracts in English
-values of 
La isomersKojima, Yasuaki*; Asai, Masato*; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; Shibata, M.*; *; Kawade, Kiyoshi*
Applied Radiation and Isotopes, 49(7), p.829 - 834, 1998/00
Times Cited Count：4 Percentile：38.68(Chemistry, Inorganic & Nuclear)no abstracts in English
states in neutron-deficient Ba nucleiAsai, Masato*; Sekine, Toshiaki; Osa, Akihiko; Koizumi, Mitsuo; Kojima, Yasuaki*; Shibata, M.*; *; Kawade, Kiyoshi*
Physical Review C, 56(6), p.3045 - 3053, 1997/12
Times Cited Count：22 Percentile：74.56(Physics, Nuclear)no abstracts in English
- angular correlation measurements for mass-separated short-lived nucleiAsai, Masato*; Kawade, Kiyoshi*; *; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki
Nuclear Instruments and Methods in Physics Research A, 398, p.265 - 275, 1997/00
Times Cited Count：6 Percentile：50.11(Instruments & Instrumentation)no abstracts in English
Maekawa, Fujio; Ikeda, Yujiro
Proc. of Int. Conf. on Nucl. Data for Science and Technol., 59, p.1201 - 1205, 1997/00
no abstracts in English
-counting by liquid scintillation instrumentationVerzilov, Y.*; Maekawa, Fujio; Oyama, Yukio; Maekawa, Hiroshi
KEK-Proceedings-95-1, 0, p.274 - 283, 1995/00
no abstracts in English
decay of unstable praseodymium isotopes: 
Pr, Pr and the new isotope 
PrOsa, Akihiko; Asai, Masato*; Koizumi, Mitsuo; Sekine, Toshiaki; ; *; Yamamoto, Hiroshi*; Kawade, Kiyoshi*
Nuclear Physics A, 588, p.185C - 190C, 1995/00
Times Cited Count：24 Percentile：76.81(Physics, Nuclear)no abstracts in English
Yoshida, Hidetoshi; JT-60 Team
Fusion Technology, 26, p.406 - 417, 1994/11
no abstracts in English
Yoshino, Ryuji; Neyatani, Yuzuru; Isei, Nobuaki; Matsukawa, Makoto; Hosogane, Nobuyuki
Purazuma, Kaku Yugo Gakkai-Shi, 70(10), p.1081 - 1101, 1994/10
no abstracts in English
PrSekine, Toshiaki; Osa, Akihiko; Koizumi, Mitsuo; ; Asai, Masato*; Yamamoto, Hiroshi*; Kawade, Kiyoshi*
Z. Phys., A, 349, p.143 - 146, 1994/00
no abstracts in English
and () rays from solid and solution sources with several solid scintillatorsUsuda, Shigekazu; Mihara, Akira; Abe, Hitoshi
Nuclear Instruments and Methods in Physics Research A, 321, p.247 - 253, 1992/00
Times Cited Count：21 Percentile：84.73(Instruments & Instrumentation)no abstracts in English
Tachibana, Takahiro*; *
JAERI-M 87-122, 56 Pages, 1987/08
no abstracts in English
; *
JAERI-M 86-041, 23 Pages, 1986/03
no abstracts in English
; *; *; ; *
JAERI-M 84-117, 42 Pages, 1984/06
no abstracts in English
*
JAERI-M 83-127, 53 Pages, 1983/08
no abstracts in English
